Tencta and little Zerri worm.

The Tencta is a big living vessel drived by worm-like creatures called Zerris. Zerris are very smart and social with other creatures, but possessed a venimous bite. Zerris are also very muscular.
Tenctas are grown. Zerris will first create the cage with a solidified mucus before applying special cells that grow specialise parts, like the upper shell, the legs, the tentacles, the eyes, nerv system, etc.
The Tencta emits watery deep vibrations. It moves not so fast.
Tencta usually tend to carry larges boxes under and on itself.
The concept of house does not exist in Zerri society, but sanctuaries and base and garages do.